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In the fig., the ends P and Q of an unst...

In the fig., the ends P and Q of an unstrechable string move downwards with uniform speed V. Mass M moves upwards with speed.

A

`2ucostheta`

B

`u/costheta`

C

`2u/costheta`

D

`ucostheta`

Text Solution

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The correct Answer is:
B
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